Sheet-metal sink construction



SHEET METAL SINK CONSTRUCTION 2 Sheets-Sheet l Filed Dec. 10, 1926 p 1927' J. E. GLOEKLER SHEET METAL SINK CONSTRUCTION Filed Dec. 10, 1926 2 ham e Patented Sept. 20, 1927. 1,642,853-

STATES PATENT OFFICE.

JOHN EDWARD GLOEKLER, F PITTSBURGH, PENNSYLVANIA.

SHEET-METAL SINK CONSTRUCTION.

Application filed December 10, 1926. Serial No. 153,819.

My invention consists in an improvement is formed of a continuous sheet or blank of in sinks and similar constructions, for the sheet metal, bent to provide the rear wall 2, purpose of providing a Vessel or utensil havbottom 3, and front wall 4, the corner bends ing a continuously smooth interior surface being rounded, as shown, to provide con- 5 over the interior of the several walls of such tinuous integral construction.

an article. I Rear wall 2 is extended upwardly to pro- In the manufacture of sinks, tubs, and the vide the usual back 6 for mounting of the like for kitchen or laundry use, sheet metal faucets or other fittings, and is turned backconstructions have been utilized with side, Wardly at the top and sides by flanges 7 and 8. 10 end and bottom Walls joined in various ways, Such back portion extends to any desired usually by overlapping construction, either height and is of the extreme outer width of riveted, bolted, or soldered together. the main sink body portion, including its Whether the interior surfaces are left rounded edges. Such edges, at the front, as plain, or are finished by application of shown in Fig. 1, are formed by turning the enamel or otherwise, the overlapping edges metal outwardly and downwardly, as clearly effect a more or less abrupt interruption to shown, providing a substantiall half round the smooth interior surface, with crevices, rim 9, and such rim extends across the front small pockets, and other objectionable Variaupper edge of the sink as an integral-portion tions, tending to collect foreign matter and of the continuous wall plate 2-3-4.

preventing the easy cleaning of the interior. The sides 10 of the sink are made of In my improved construction, I avoid these separate sheet metal blanks, pressed in suit objections by so constructing the walls and able dies to form inwardly turned rounded their joined portions by an interfitting conlower corner portions 11 and outwardly and tinuous surface welded connection between downwardly turned rounded upper edge porthe meeting edges at various points so as to tions 12, at each Side. lhe latter correspond provide continuous flush surfaces through I in size and are on the same general plane as out, with an avoidance of the objections the front rim 9, so as to effect a continuous above noted. 1 rim from the side edge portion of the back One preferred embodiment of the invenatone side, along the front, and then back tion is illustrated in the accompanying drawalong the other side to the opposite side edge ings, in which: portion of the back, as clearly shown in Fig. l is a perspective view of the body Fig. 1. a

- portion of a sink constructed in accordance The corner portions of slde 10 are cupped therewith; v in the pressing operation, so as to provide 35 Fig. 2 is a'plan view of Fig. 1; easily rounded corners, which merge into Fig. 3 is a vertical cross section on the line the plane'of the slde, bottom, front and back III-+111 of Fig. 1; v walls, when the blanks are assembled and Fig. 4 is a vertical section on the line FV- finally joined, as hereinafter described. IV of Fig. 1, transverse thereto; lhe inwardly turned edgesof sides 10, at Fig. 5 is a horizontal cross section on the the front, bottom, and back, terminate in line VV of Fig. 3; j edges which meet the side edges of the main Fig. 6 is an enlarged sectional detail view, blank 234 on the welding line a. Such showing the corner construction, on the line line, at each side of the construction, pro- Vf-VI of Fig. 1: vides a meeting and welding joint on the 45 Fi 7 is a similar sectional view on the continuous plane wx, Fig. 4, defining a line 1--VII of Fig. 6; and generally Ushaped form of joint.

Fig. 8 is a detail view showing the cut- The back wall 6 is cut out, as indicated at 'out portion of the rear wall for inter-fitting 13, for joint connection with the rear edge connection with the side wall, in forming of the upperrounded rim 12, and the side '50 such corner connection. edge portions of the back 2 are also out out,

The sink as a whole, in the form shown, as at 14, to a distance equalling the inward projection of the rounded corner portions 15 of the sides, 10. By such construction, the sides, when placed in position, interfit throughout with the main front, bottom and back portions, and are flush therewith at every point.

The meeting edges, as thus brought together, are then electrically welded continuously along the line a, from the front, along the bottom and clear to the back, so that the sides as thus joined are, in effect, flush continuations of such portions. The corners of the rounded rims 9 and 12 are similarly joined and welded", as at 16, the corner terminals being provided with a miter face for such purpose, as shown.

At -the inner rear-upper corner portions of each side connection, immediately below the juncture of the rounded edge 12 with the back, there is formed a small angular pocket, due to the upper edge terminal of the inner rounded fillet formation of the.

corner 15, as at 17 Such corner is preferably filled with solder or other suitable material, so as to avoid any projecting edges and give aneatly rounded concave joined surface.

As thus connected, there is a substantially integral juncture between the'several walls forming the basin or bodyportipn of the sink, and its parts. Any projections or roughness along the weld-ed seam a may be ground off or otherwise removed so as to render the interior surface smooth, after which it may be covered with an suitable coating material, as an enamel fiIllSll, or tin coating, or hot galvanized treatment.

The vessel may, however, be left unfinished, and will still maintain its advantages, due to the manner of construction, if it is desired to use it without any fiIllSll whatever.

For the purpose of heating the-sink or its contents, as for cleaning or other purposes,

. I provide a burner 20 of any suitable construction, provided with a gas supply pipe 21, to effect combustion immediately under the sink bottom.

A surrounding downwardly extending coping or apron 22 of sheet metal, preferably perforated, surrounds the burner, protecting it from draft, and enclosing the combustion chamber, as clearly shown in Figs. 3 and 4.

The various advantages of the invention .will be readily understood and appreciated 1. In the construction of sheet metal sinks and the like, a continuous blank forming a back, bottomvand front wall, cut out at the back for abutting connection with the side walls, and side walls having inwardly turned edges and outwardly turned rims welded thereto.

2. In the construction of sheet metal sinks I welded thereto, and outwardly turned rim portions. 7

.3. In the construction of sheet metal sinks'and the like, a continuous blank bent upon itself to form an upwardly extending fiat faced back, abottom, and a front wall having an outwardly rounded top rim portion with chamfered corners, and side walls having rounded corner portions bent inwardly with their edges in abuttingengagement with the edges of the front, bottom and back portions and welded thereto.-

4. In the construction of sheet metal sinks and the like, a continuous blank bent upon itself to form an upwardly extending flat faced-back, a bottom, and a front wallhaving an outwardly rounded top rim portion with chamfered corners, and side walls having rounded corner portions bent inwardly with their edges in abutting engagement with the edges of the front, bottom and back portions and welded there to, the front wall and side wall portions having outwardly turned rims welded at their meeting edges.

5. In the construction of sheet metal sinks and the "like, a continuous blank bent upon itself to form an upwardly extending flat faced back, a bottom, and a front wall having an outwardly rounded top rim portion with chamfered corners, and side walls having rounded corner portions bent inwardly with their edges in abutting engagement with the edges of the front, bottom and back portions and welded thereto, the rear wall portions being cut out to conform to the rim portions of the sides and welded thereto. A v

6. In sheet metal sink construction, the combination with a sheet metal back having cutout clearance openings at its side edge portion, of a side wall member having an inwardly turned rear edge portion and an outwardly turned rim in abutting engagement therewith and electrically welded thereto. V.

7. In sheet metal sink construction, the combination of a pressed sheet metal blank having a an upper backwardly flanged splash board, a main back wall portion insimilar sidewall members havine; rounded tegral therewith having cut out clearance corner portions and a rounded rim welded portions for the side edge and rim' ortions, to and forming flush continuations of said 10 a bottom wall member forming a nt exmembers. i. 5 tension of the back and a front wall mem- In testimony whereof I hereunto aflix my ber\ forming a bent extension of the bottom g urehaving an upper outwardly turned rim, and JOHN EDWARD GLQEKLER. 

